Sorry about your mom. Not fair! I doubt if preventatives would have helped. You'd think that if you stayed on the pavement all your life you'd never get run over, but alas that's not the case. I have set a course of diet, exercise and minimal medication and if at any time I feel out of sorts I try to do something about it. I also think that if you want to take low-dose aspirin daily and it makes you feel a bit more comfortable, do it. My old GP prescribed it for everything. "Have a bucketful," he used to say, "they're cheap!"